PDF malware analysis — malicious · 18c42906904f93b7

MALICIOUS

PDF

66.6 KB Created: 2020-11-25 04:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: d163ac036a4b7cd7c6007bade2defa7c SHA-1: 125c717d1d825fa6a5587283f0588ed77d19fba2 SHA-256: 18c42906904f93b7a0e4125cb7e7e004444eea65a2390bd54fb7deebf5d705e4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://trafficel.ru/strik?utm_term=psalm+23+bible+study+questions PDF link annotation
- https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/8861211.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380237/normal_5fbd8e585f74d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465151/normal_5fa7f30aafc85.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489052/normal_5fb2ba58e0e4b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/e00f2ab2-0178-4405-b786-3eb79b3b54e0/bivevukuvusenidoxinufuzib.pdfIn PDF document text
- https://s3.amazonaws.com/subud/81756712882.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1dd3cc03-f748-4b4d-bb48-995c7fd1236d/free_3_digit_addition_worksheets_without_regrouping.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0025ba5d-c218-4167-b496-685b7199a66c/raxejirakefefonobeda.pdfIn PDF document text
- https://s3.amazonaws.com/seriposuj/math_answers_precalculus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c96151e1-aaaf-42e4-bc67-d8c57ecc3c33/xalanapijova.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fa238552-f3dc-41ea-9b00-617f1d2ab5f7/brooklyn_city_directories_digital.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c774.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC774	5540 bytes
SHA-256: `3ed47fdf701251585f2fcbba33bd45d91dd4c0f93df32ac649269788a46f1d2c`
`font_01_sfnt_off0000da3d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA3D	10440 bytes
SHA-256: `d6899e7427108edaa2ee7942b83e2886f1bed714c50240f95fb187fb7f1de80d`

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